move helpers to evaluate

jedi/api.py

@@ -22,17 +22,17 @@ from jedi.parser import fast
 from jedi.parser.user_context import UserContext
 from jedi import debug
 from jedi import settings
-from jedi import helpers
 from jedi import common
 from jedi import cache
 from jedi import interpret
 from jedi import keywords
+from jedi import api_classes
 from jedi.evaluate import Evaluator, filter_private_variable
 from jedi.evaluate import representation as er
 from jedi.evaluate import builtin
 from jedi.evaluate import imports
 from jedi.evaluate import dynamic
-from jedi import api_classes
+from jedi.evaluate import helpers
 
 
 class NotFoundError(Exception):

jedi/evaluate/representation.py

@@ -13,14 +13,14 @@ import copy
 
 from jedi._compatibility import use_metaclass, next, unicode
 from jedi.parser import representation as pr
-from jedi import helpers
 from jedi import debug
 from jedi import common
+from jedi.evaluate.cache import memoize_default, CachedMetaClass
 from jedi.evaluate import builtin
 from jedi.evaluate import recursion
-from jedi.evaluate.cache import memoize_default, CachedMetaClass
 from jedi.evaluate import iterable
 from jedi.evaluate import docstrings
+from jedi.evaluate import helpers
 
 
 class Executable(pr.IsScope):

jedi/refactoring.py

@@ -17,7 +17,7 @@ from __future__ import with_statement
 import difflib
 
 from jedi import common
-from jedi import helpers
+from jedi.evaluate import helpers
 from jedi.parser import representation as pr